package com.shiminghui.StringBuilder;

public class Demo3 {
    public static void main(String[] args) {

        int[] arr ={1,2,3,45,6};

        StringBuilder sb = new StringBuilder();
        sb.append("[");
        for (int i = 0; i < arr.length; i++) {
            if (i==arr.length-1){
                sb.append(arr[i]+"]");
            }else {
                sb.append(arr[i]+",");
            }

        }

        System.out.println(sb.toString());

    }
}
